Evaluate lim (x→0) (e^x + e^-x - 2) / x²

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lim (x→0) (e^x + e^-x - 2) / x^2
lim x tends to 0 e^x+e^-x-2/x^2
limit x→2 e^x - e^2 x - 2
limit x→0 e^x-e^- x- 2/x^2
#math #calculus
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